GB Q345/ASTM A572 Gr50 Alloy Structural Steel Square Bar

Place of Origin:Hebei,China Brand Name:Haihao Group

Shape:square bar Material:Alloy Structural Steel

Steel Grade: ATSM A572 Gr50/GB 16Mn/GB Q345

Size:Diameter:10mm~300mm

Application:widely used in construction and project structure, also used in making rebar, house frame, pylon, bridge, cars, container etc.

Chemical composition

	C	Mn	Si	P	S	Al	V	Ti	Cr	Mo
Q345A	≤0.20	≤1.70	≤0.50	≤0.035	≤0.035		≤0.15	≤0.20	≤0.30	≤0.10
Q345B	≤0.20	≤1.70	≤0.50	≤0.035	≤0.035		≤0.15	≤0.20	≤0.30	≤0.10
Q345C	≤0.20	≤1.70	≤0.50	≤0.30	≤0.030	≤0.015	≤0.15	≤0.20	≤0.10	≤0.10
Q345D	≤0.18	≤1.70	≤0.50	≤0.30	≤0.025	≤0.015	≤0.15	≤0.20	≤0.30	≤0.10
Q345E	≤0.18	≤1.70	≤0.50	≤0.25	≤0.020	≤0.015	≤0.15	≤0.20	≤0.30	≤0.10